APA引文

Paker,J E S. (1974). The economics of innovation. Longman.

Chicago Edition Citation

Paker,J E S. The Economics of Innovation. London: Longman, 1974.

MLA引文

Paker,J E S. The Economics of Innovation. Longman, 1974.

警告：这些引文格式不一定是100％准确.